71133328 has 20 divisors (see below), whose sum is σ = 157509760. Its totient is φ = 30485664.

The previous prime is 71133311. The next prime is 71133329. The reversal of 71133328 is 82333117.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 71133296 and 71133305.

It is not an unprimeable number, because it can be changed into a prime (71133329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317448 + ... + 317671.

It is an arithmetic number, because the mean of its divisors is an integer number (7875488).

Almost surely, 2^71133328 is an apocalyptic number.

It is an amenable number.

71133328 is an abundant number, since it is smaller than the sum of its proper divisors (86376432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71133328 is a wasteful number, since it uses less digits than its factorization.

71133328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635134 (or 635128 counting only the distinct ones).

The product of its digits is 3024, while the sum is 28.

The square root of 71133328 is about 8434.0576237064. The cubic root of 71133328 is about 414.3408086176.

The spelling of 71133328 in words is "seventy-one million, one hundred thirty-three thousand, three hundred twenty-eight".